Plumbing
104-Gallon Black Water Capacity
Ample capacity for extended trips without frequent stops.
2026 Forest River Sandpiper 3900HBLR
USEDFifth WheelDecatur, ALStock #048391-C
2026 Forest River Sandpiper 3900HBLR
1 / 3
- Length
- 42.75ft Length42.75ft42.75ft
- Sleeps
- Sleeps 444
- Dry Weight
- 13,225lbs Dry Weight13,225lbs13,225lbs
$64,999
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USEDFifth WheelDecatur, ALStock #048391-C
2026 Forest River Sandpiper 3900HBLR
1 / 3
- Length
- 42.75ft Length42.75ft42.75ft
- Sleeps
- Sleeps 444
- Dry Weight
- 13,225lbs Dry Weight13,225lbs13,225lbs
$64,999
AI Assistant
Ask me anything about this unitOnline
Quick questions about this 2026 Forest River Sandpiper:
* AI-generated responses are for informational purposes only and may contain errors. Please verify all information with Johnston RV Center before making purchasing decisions.
1 / 3
USEDFifth WheelDecatur, ALStock #048391-C
2026 Forest River Sandpiper 3900HBLR
- Length
- 42.75ft Length42.75ft42.75ft
- Sleeps
- Sleeps 444
- Dry Weight
- 13,225lbs Dry Weight13,225lbs13,225lbs
$64,999
AI Assistant
Ask me anything about this unitOnline
Quick questions about this 2026 Forest River Sandpiper:
* AI-generated responses are for informational purposes only and may contain errors. Please verify all information with Johnston RV Center before making purchasing decisions.
Layout & Media
Explore the floorplan, 3D tour
Complete Fifth Wheel Specifications
2026 Forest River Sandpiper Overview
Experience the adventure with the 2026 Forest River Sandpiper 3900HBLR, a spacious used fifth wheel that's perfect for your family getaways. With a generous length of 43 ft and a dry weight of 13,225 lbs, this model offers plenty of living space and comfort for up to 4 people. The well-designed layout features a kitchen island, three slides, and a rear living area, ensuring an enjoyable experience whether you're cooking or relaxing. Enjoy the convenience of a tankless water heater and solar readiness for off-grid excursions. This versatile fifth wheel is ready for your next journey. Come take a look!
Premium Features & Highlights
Sleeps 4 for family adventures
Three slide-outs for extra space
Kitchen island for convenient meal prep
Tankless water heater for endless hot water
Solar ready for off-grid adventures
Select a category to view specs
Overview
Vehicle Identification & Details
8 specifications available
- Category
- Fifth Wheel
- Condition
- used
- Floorplan
- 3900HBLR
- Make
- Forest River
- Model
- Sandpiper
- Stock Number
- 048391-C
- VIN
- 4X4FSAR25TJ048391
- Year
- 2026
Size & Weight
Dimensions, Weight, Construction & Exterior
9 specifications available
- Dry Weight
- 13,225 lbs
- GVWR
- 16,085 lbs
- Length
- 42.75 ft
- Exterior Height
- 13.33 ft
- Width
- 8 ft
- Awning Length
- 18 ft
- Awnings Count
- 2
- Slides
- 3
- Hitch Weight
- 2,085 lbs
Sleeping & Layout
Beds, Layout, Living & Comfort
7 specifications available
- King Beds Count
- 1
- Primary Bedroom Location
- Front
- Murphy Beds Count
- 0
- Sleeps
- 4
- Interior Lighting
- LED
- Living Area Location
- Rear
- U Shaped Dinette
- false
Kitchen & Dining
Cooking, Dining & Appliances
4 specifications available
- Kitchen Island
- Yes
- Refrigerator Power Mode
- 12V
- Refrigerator Size
- 16
- Washer Dryer Prep
- Yes
Bathroom & Facilities
Comfort & Privacy
2 specifications available
- Bathrooms Count
- 1
- Shower Type
- Standard
Water Systems
Tanks & Plumbing
4 specifications available
- Black Water Capacity
- 104 gal
- Fresh Water Capacity
- 50 gal
- Gray Water Capacity
- 136
- Has Tankless Water Heater
- Yes
Power & Electrical
Electrical, Entertainment & Safety
2 specifications available
- Solar Ready
- Yes
- Washer Dryer Prewiring
- Yes
Climate Control
Heating & Cooling
1 specifications available
- Heater Btu
- 60,000 BTU
Manufacturer Features & Equipment
5/8" tongue and groove DryMax® OSB floor decking
2 x 3 floor joists, 12" on center
Smoke alarm
Fire extinguisher
Two chairs in place of ottoman bench, Cordless vacuum, Slide room awnings (N/A dinette slides), Washer and Dryer (Standard on 3800RK & 3900HBLR), 3rd A/C power saver direct dump system w/ wall thermostat,
Automatic Electric Level-Up System, 2" Towing and Accessory Hitch (Where Available), 7,000lb axles with Anti-lock Braking System, Goodyear Radial Tires w/ anti-lock brakes, Lippert auto adjust brakes, Rich Solar 200W roof mounted solar panel with controller and battery, Quad MORryde® step above with strut (Where Available), Color matched high gloss gel coated colored exterior fiberglass, Painted two tone aerodynamic fiberglass front cap with improved turning radius, Underbelly Armor, Tire Pressure Monitoring System, Spare tire, Large, tinted windows with 80/20 UV prohibitor, Electric awning with LED light strip, Prepped for Lippert On-The-Go Ladder, Power front jacks with spring loaded pins, Automotive-style fender skirts, Hitch light, Porch light with interior switch, 30 lb. double LP tanks with auto change over, Rain gutters with extra-long drip spouts (Prevents black streaking), Insulated heavy duty slam lock baggage doors, Exterior foldable grab handle, Unobstructed pass-through storage area, Upgraded aluminum rims, Oversized friction hinge entry door with extended latch (Main Entry), Exterior LP Quick Connect, 30-lb. double LP tanks with auto change over,
Solid Surface Kitchen Counter tops, Fiberglass one-piece shower, Washer and Dryer Prep, 7’ slide-out height (Main Slides), Stainless steel kitchen package, Beachside Sundance Congoleum linoleum, Hidden hinged, soft close drawers and cabinets, Full extension ball bearing drawer guides, Stainless steel under mounted kitchen sink, Trash receptacle in kitchen, Decorative backsplash, Two color coordinated interiors, LED lighting throughout, Recessed residential lighting, Accent lighting over dinette, Extra-large, panoramic picture windows throughout, Vented side windows in slide-outs, TV antenna with booster, Solid wood drawer fronts with birch sides, Solid wood, square inset cabinet doors, painted or wood grain, Bedroom slide-out fascia, Memory foam mattress, 50" flatscreen smart TV (65” 3900HBLR), JBL Aura Cube FM/Bluetooth media center, Designer window treatment, Ceiling fan, Tri-fold hide-a-bed sofa, Quilted bedspread, Prepped for inverter, Teddy Bear® bunk mats,
Dual ducted 15k BTU Air Conditioners, prepped for 3rd 15k BTU A/C, AIRDIRECT® Air Vents for improved efficiency, 16 cu. ft. 12V refrigerator, 60,000BTU On Demand Tankless Water Heater, 40,000BTU furnace, Heated Holding Tanks (12V), Floor ducted 40,000BTU furnace, 30" OTR stainless steel microwave, Chef collection 3 burner / 24" oven with drawer, Interior monitor panel for holding tanks, Satellite and cable hookup with RG-6 cable for high quality picture, Porcelain foot flush toilet(s), 65 Amp converter, Power fan in Kitchen and Bathroom(s), Dual ducted 15,000 BTU Air Conditioners, prepped for 3rd 15,000 BTU A/C, 40,000 BTU furnace,
Features and equipment are provided by the manufacturer for this model line and may include optional equipment or items that vary by floorplan and trim. Please confirm with Johnston RV Center which options are included on this unit.
* Vehicle specifications listed to the best of our knowledge. All specifications, features, and information are provided by the manufacturer. Johnston RV Center is not responsible for manufacturer defects, specification changes, or recalls. Buyers should verify all information directly with Johnston RV Center.
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Built to Last
Superior construction for years of adventures
Chassis & Towing
16,085 lbs GVWR
Designed to handle a variety of towing needs.
Ready for Your Next Adventure?
Experience the freedom of the open road with your next RV adventure
Payment Calculator
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from $467/mo
Estimated • 20% down
Schedule Tour
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Showroom Hours
Mon-Fri: 8:30 AM - 6 PM, Sat: 8:30 AM - 5 PM, Sun: Closed
3504 Deere Rd. SE Decatur, AL 35603
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Manufacturer and/or stock photographs may be used and may not be representative of the particular unit being viewed. We are not responsible for any misprints, typos, or errors found in our website pages. Any price listed excludes sales tax, registration tags, and delivery fees. Manufacturer pictures, specifications, and features may be used in place of actual units on our lot. Please contact us for availability as our inventory changes rapidly. All calculated payments are an estimate only and do not constitute a commitment that financing or a specific interest rate or term is available.
$64,999
est $467/mo